Paper trimmer



s. BRADSHAW PAPER 'TRIIIER Filed June 15, 1925 INVENTOR ,S' 01012: onBradshaw ATTORNEY Patented July 13, 1926.

PATENT or-rlce.

SOLOMON BRADSHAW, OI KERIDEN, CONNECTICUT.

rarna rzamuna.

Application filed lane 15, 1925. Serial .Io. 87,088.

This invention relates to trimmers, and more particularly to a devicefor cutting ofi the edges of thin sheets of material such as wall paper,wood veneer, window shades, etc.

One object of this invention is to provide a trimmer of the above naturewhich will be especially adapted for adjustably holding a 'thin flatblade. such as is used in 4 safety razors of the Gillette type.

there have, been illustrated on the accomanying drawings, two forms inwhich the invention may be conveniently embodied in practice. Fig. 1represents a top plan view of the trimmer.

Fig. 2 is a side sectional view of the same .0 taken along the line 2-2of Fig. 1, looking in the direction of the arrows.

Fig. 3 is a front view of the trimmer, the razor blade carried therebybeing shown by dotted lines. 7

ll Fig. 4 is a side view of the same.

Fig. 5 is a front view of a modified form of trimmer, having means forreadily adjusting the razor, blade according to the depth of cutdesired.

0 Fig. 6 is a sectional view, with parts broken away, of the modifiedform of trimmet, the section being taken along the line 6-6 of Fig. 5,looking in the direction of the arrows.

I 7 Referring now to the drawings in which like reference numeralsdenote corresponding parts throughout the several views, the numeral 10indicates a body member having a flat bottom 11 and an arched top 12.One

U side of the bod member has a curved shallow recess 13 a apted to forma' su port for the fingers ,of the user. The si e of the member oppositefrom the recess 13 is 26 and 2? provided with as thin depending taperedflange 14, said flange converging slightly from left to right, as viewedin Fig. 1.

A blade 15, preferably but not necessarily of the Gillette razor type,is adapted to be clamped against the tapered depending flange 14 bymeans of a thin face plate 16. The face plate 16 is preferablyrectangular in shape and is adapted to be held tightly against the sideof the body member 10 by a pair of knurled hand-operated screws 17 and18, said screws being adapted to engage in threaded sockets 19 formed insaid body member 10. h V

In order to shift the position .of the razor blade according to thethickness of the material to be cut, the face plate 16 and the bodymember 10 are provided with alined semi-circular vertical recesses 20and 21. As will be clear from Fig. 1, the recesses 20 and 21 form asocket into which a stick of wood or other suitable instrument, notshown, may be inserted to engage the upper edge of the blade 15, theknurled screws 17 and 18 having first been loosened to permit the bladeto be readily moved.

For the purpose of enabling the width of cut to be accurately adjusted,provision is made, at one end of the body member, of a pair of angularrecesses 22 and 23, said recesses being adapted to form seats for L-shaped gauge pins 24 and 25. The gauge pins are preferably square incross-section so as to fit non-rotatively in the angular recesses 22 and23. The gauge pins 24 and 25 are adapted to be held withtheir bent ends26 and 27" at any desired distance from the face plate 16 by means of apair of knurled screws 28 and 29 which extend through suitable threadedsockets passing through said angular recesses 22 and 23.

In operation. when it is desired to use the device forcutting 011' theedge of a sheet of ma erial, a straight edge 30 will first be laid uponthe sheet near its edge. The trimmer will then be placed with itstapered flange 14 against the straight edge 30. The gauge pins 24 and 25will next be adjusted relative to the bod member 10 to produce thedesired widt of cut, and the ends of the straight edge will then be'moved "relative to the ed e of the sheet until the bent ends of saidgauge pins exactly coinholding the sheet with one hand, the user willgrasp the trimmer in the other hand and draw it rapidly along thestraight edge 30 using sufiicient pressure to cut through the thicknessof the sheet or sheets upon which the straight edge is laid.

The modified form ofedge trimmer illustrated in Figs. 5 and 6 is similarto the-device shown in Figs. lto 4, inclusive, and described above, butis rovided with a selfcontained mechanism for readily adjusting theposition of the blade.

The face plate 16 of the modified form of trimmer is provided with anaperture 31 and an arcuate slot 32 located between the knurled screws 17and 18. A fulcrum pin 33 passes through the a erture 31 and is tightlyfitted within a. cylindrical socket 34 formed in the body member 10.Surrounding the fulcrum pin 33 is an adiusting arm 35 which liesunderneath the blade 15 and has a fiat hand knob 36 proiecting outthrough the center hole of the blade and through the arcuate slot 32 ofthe face plate.

In the operation of the modified form of trimmer when it is desired toadjust the position of the blade to correspond to a difierent depth ofcut, it will merely be necesary to slightly unscrew the knurled screws17 and 18, and by then grasping the knob 36 between the fingers. theblade may be moved as maybe desired. After the screws 17 and 18 havebeen tightened, the trimmer will be again ready for use.

One advantage of thisinven'tion is that the tapered flange 14 will givethe blade a slight inclination to the direction of travel of the bodymember. and the blade will thus be prevented from following in the grainof the board underneath the sheets to be cut and thus being drawn out ofalinement.

A further advantage is that the trimmer may be operated by one hand ofthe user, leaving the other hand free to hold the sheet material.

A further advantage is that by using a thin blade a much cleaner andstraighter cut may be made than was possible with the former tvnes oftrimmers.

While there has been disclosed in this specification two forms in whichthe inven tion may be embodied. it is to be understood that these formsare shown for the purpose of illustration onlv. and that the invention snot to be limited to the specific disclosures but mav be modifiedv andembodied in various other forms without departing from its spirit. inshort, the invention includes all the modifications and embodimentscomin within the scope of the following claims. Having thus fullydescribed the invention.

what is claimed as new. and for which it is b desired to secure LettersPatent. is:

1. In an edge trimmer for thin sheet material, a body member adapted tobe grasped in one hand of the user, said body member having a dependingflange adapted to engage a straight edge t6 guide the trimmer during thecutting operation, a face plate for clamping a' flat blade against saidflange, and means for securingsaid face plate to said body member.

2. In an edge trimmer for thin sheet ma terial, a body member adapted tobe grasped in one hand of the user, said body member having a tapereddepending flange adapted to engage a straight edge to guide the trimmerduring the cutting operation, a face plate for clamping a flat bladeagainst said flange, and means for securing said face plate to said bodymember.

3. In an edge trimmer for thin sheet material, a body member adapted tobe grasped by one hand of the user, means depending from said bodymember adapted to engage a straight edge for guiding the trimmer duringthe cutting operation, means for detachably clamping a flat bladeagainst said body member, and means extending forwardly beyond thecutting edge of said trimmer for gaugingthe width of cut.

4. In an edge trimmer for thin sheet material, a body member adapted tobe grasped by one hand of the user, means depending from said bodymember adapted to engage a straight edge for guiding the trimmer duringthe cutting operation, means for detachably clamping a flat bladeagainst said body member. one end of the body member having an angulargroove formed therein. a guiding member of angular cross-section fittingsaid groove, said guiding member having its extremity bent body member.

5. In an edge trimmer for thin sheet maferial, a body member adapted tobe grasped in one hand of the user, said body member parallel to theedge of said having a depending flange adapted to engage a straight edgeto guide the trimmer during the cutting operation, a face plate forclamping a flat blade against said flange, and means for securing saidface plate to said body member, an adjusting arm pivoted between saidflange and said face plate. said adjusting arm having an operating knobprojecting through said face plate to adjust the position of the blade.

6. In an edge trimmer for thin sheet ma- 1 terial. a. body memberadapted to be grasped in one hand of the user, said body member having adepending flange adapted to engage a straight edge to guide the trimmerduring the cutting operation. a face plate for clamping a fiat bladeagainst said flange, and a air of thumb screws for detachablv securingsaid face plate against said body mem;

7. In an edge trimmer for thin sheet material, a body member adapted tobe grasped in the hand of the user, means for detachably clamping a thinrazor blade in cutting position upon said body member, a de endingflange on said body member to gui e the trimmer along a straight edgeduring the cutting operation, and means extending to the edge of saidsheet material to adjust the position of said straight edge and gaugethe width of cut.

8. In an edge trimmer for thin sheet material, a body member adapted tobe grasped in the hand of the user, means for guiding said trimmer alonga straight ed e during the cutting operation, means for c amping a 1blade on one edge of said body member, and

means pivoted to said body member for ad- ]usting the position of saidblade.

9. In an edge trimmer for thin sheet material, a body member adapted tobe grasped in the hand of the user, means for guiding said trimmer alonga straight edge during the cutting operation, means for clamping a bladeon one edge of said body member, and means ivoted to said body memberand extending t rough said clam 111g means for adjusting the position ofsai blade.

- In testimon whereof, I have aifixed my signature to t isspecification.

SOLOMON BRADSHAW.

